This
is
the
FHIR
R4
Mixed
Normative/Trial
Use
Ballot
#1,
and
the
version
for
the
Cologne
Connectathon
in
May
2018.
The
current
version
is
R3
.
See
the
ballot
introduction
for
details
about
the
ballot.
For
a
full
list
of
available
versions,
see
the
Directory
of
published
versions
and
Timelines
for
an
explanation
of
STU
and
other
statuses.

The
special
operations
on
the
meta
element
also
operate
on
previous
versions
of
a
resource
(/_history/).
They
are
the
only
operations
that
can
manipulate
versions
other
than
the
"current"
version.

Implementation
Guides
can
define
additional
operations

1.5.1
Services
Defined
by
the
FHIR
specification

This
specification
defines
a
set
of
services,
which
are
business
level
aggregations
of
Resources
and
Operations
that
provide
a
defined
package
of
functionality
that
correspond
to
an
identified
business
need.

Note
that
in
addition
to
the
services
defined
in
this
specification,
many
implementation
guides
define
business
level
services.

A
service
that
lets
healthcare
applications
make
use
of
codes,
code
systems,
and
value
sets
without
having
to
become
experts
in
the
fine
details
of
the
code
system,
value
set
and
concept
map
resources,
and
the
underlying
code
systems
and
terminological
principles.
The
service
provides
the
following
functionality:

A
service
that
provides
the
underlying
services
needed
to
test
whether
resources
conform
to
the
rules
defined
by
the
FHIR
specification
and
applicable
implementation
guides,
and
to
help
author
implementation
guides.
The
service
provides
the
following
functionality: